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Information × Registration Number 0202U000394, 0199U002034 , R & D reports Title Development of the theoretical basis and analysis of static and dynamic response processes of nonlinear systems subjected to various deterministicand stochastic power fields popup.stage_title Head Bazhenov V.A., Registration Date 05-02-2002 Organization Kiev National University of bildiny and tecture popup.description2 In the process of R&D the new forms of relationships between increments of stresses and strains for compressed and non-compressed isotropic and orthotropic models of deformed bodies are obtained. Software for nonlinear problems of combined shell systems are developed and tested. Methods of elastic system response with one-sided links under stochastic loading are developed. With usage of those methods investigations of dynamic responses of real combined systems to seismic loadings with various of Monte Carlo method for rare events probabilities estimation (system failures) of 3D deformed systems was developed and implemented. The effectiveness of the developed schemes in comparison with straight forward Monte Carlo method is demonstrated. Studies on the numerical methods in stochastic dynamics development were performed. Analysis of regular and chaotic vibrations of deformed systems was fulfilled. Numerical proof of simulation methodic of nonlinear deformation, stability and overcritical state of thi n nonhomogenious shells subjected to force and temperature loadings. Convergence, accuracy in the field of finite element solutions in non-linear problems of nonhomogenious shells buckling with analytical, numerical and experimental solutions are studied. For plates and shallow shells the influence on stress-strain of stability and overcritical state of shell of thickness, dimensions and excentricity of ribs, holes and multilayers, different approaches in thermo-force loading are analyzed. Analysis of the obtained results is showing the effectiveness of the developed technique, sufficient convergence and accuracy of the results. For various nonhomogenious shells the inherent effects of non-linear deforming and buckling are found out. Product Description popup.authors popup.nrat_date 2020-04-02 Close